$ git clone -n https://src.fedoraproject.org/rpms/rust-rgb.git /var/lib/mock/epel10.1-build-60970854-6587093/root/chroot_tmpdir/scmroot/rust-rgb
Cloning into '/var/lib/mock/epel10.1-build-60970854-6587093/root/chroot_tmpdir/scmroot/rust-rgb'...
$ git fetch origin afb5e8444b8d388a45ffd05e2719fe1bfb2a6f7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rgb
 * [new ref]         afb5e8444b8d388a45ffd05e2719fe1bfb2a6f7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afb5e84 Update to version 0.8.51; Fixes RHBZ#2376544