$ git clone -n https://src.fedoraproject.org/rpms/rust-libz-sys.git /var/lib/mock/epel9-build-60970876-6587094/root/chroot_tmpdir/scmroot/rust-libz-sys
Cloning into '/var/lib/mock/epel9-build-60970876-6587094/root/chroot_tmpdir/scmroot/rust-libz-sys'...
$ git fetch origin 4f7e88e7718bb02ba840d50b40bf0a8e83734db3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libz-sys
 * [new ref]         4f7e88e7718bb02ba840d50b40bf0a8e83734db3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f7e88e Update to version 1.1.22; Fixes RHBZ#2336138