$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-pack.git /var/lib/mock/f41-build-side-1-2849436-33912/root/chroot_tmpdir/scmroot/rust-gix-pack
Cloning into '/var/lib/mock/f41-build-side-1-2849436-33912/root/chroot_tmpdir/scmroot/rust-gix-pack'...
$ git fetch origin 0e4c85b815245bcd4441d380d5d0b501c03962f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-pack
 * [new ref]         0e4c85b815245bcd4441d380d5d0b501c03962f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e4c85b Update to version 0.53.0 (rhbz#2307390)