$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-lock.git /var/lib/mock/f40-build-1505315-23885/root/chroot_tmpdir/scmroot/rust-gix-lock
Cloning into '/var/lib/mock/f40-build-1505315-23885/root/chroot_tmpdir/scmroot/rust-gix-lock'...
$ git fetch origin 0bc9cb0a7c11568557787c69ec517ada8efc6fa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-lock
 * [new ref]         0bc9cb0a7c11568557787c69ec517ada8efc6fa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0bc9cb0 Update to version 14.0.0 (rhbz#2282450)