$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-discover.git /var/lib/mock/f40-build-2660152-66918/root/chroot_tmpdir/scmroot/rust-gix-discover
Cloning into '/var/lib/mock/f40-build-2660152-66918/root/chroot_tmpdir/scmroot/rust-gix-discover'...
$ git fetch origin 6f3c1c49fe804c5e86081220537a58ad0e95cf0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-discover
 * [new ref]         6f3c1c49fe804c5e86081220537a58ad0e95cf0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f3c1c4 Update to version 0.26.0