$ git clone -n https://src.fedoraproject.org/rpms/rust-bat.git /var/lib/mock/f42-build-3252996-41225/root/chroot_tmpdir/scmroot/rust-bat
Cloning into '/var/lib/mock/f42-build-3252996-41225/root/chroot_tmpdir/scmroot/rust-bat'...
$ git fetch origin ba5bc9fa39847f3ecef1f0521c24d3ef50b1102a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bat
 * [new ref]         ba5bc9fa39847f3ecef1f0521c24d3ef50b1102a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba5bc9f Update to version 0.25.0 (rhbz#2336226)