$ git clone -n https://src.fedoraproject.org/rpms/rust-prost-build.git /var/lib/mock/epel9-build-side-110594-59048620-6570648/root/chroot_tmpdir/scmroot/rust-prost-build
Cloning into '/var/lib/mock/epel9-build-side-110594-59048620-6570648/root/chroot_tmpdir/scmroot/rust-prost-build'...
$ git fetch origin 4e6a6b1f0fa2a26c931d31813a9b79d463023729:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prost-build
 * [new ref]         4e6a6b1f0fa2a26c931d31813a9b79d463023729 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e6a6b1 Update to version 0.13.5; Fixes RHBZ#2345155