$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-recog.git /var/lib/mock/f41-build-1102537-20044/root/chroot_tmpdir/scmroot/gap-pkg-recog
Cloning into '/var/lib/mock/f41-build-1102537-20044/root/chroot_tmpdir/scmroot/gap-pkg-recog'...
$ git fetch origin d4cb02d5eb1e4c5074f5d4f317a4a6e7f97d8c06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-recog
 * [new ref]         d4cb02d5eb1e4c5074f5d4f317a4a6e7f97d8c06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4cb02d Rebuild for gap 4.13.0