$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-groupoids.git /var/lib/mock/f38-build-side-42-init-devel-595567-26162/root/chroot_tmpdir/scmroot/gap-pkg-groupoids
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-595567-26162/root/chroot_tmpdir/scmroot/gap-pkg-groupoids'...
$ git fetch origin 956b90d2c4e509ded8ca4028c31d133da69f2700:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-groupoids
 * [new ref]         956b90d2c4e509ded8ca4028c31d133da69f2700 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 956b90d Version 1.73.