$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-forms.git /var/lib/mock/f40-build-2664328-67050/root/chroot_tmpdir/scmroot/gap-pkg-forms
Cloning into '/var/lib/mock/f40-build-2664328-67050/root/chroot_tmpdir/scmroot/gap-pkg-forms'...
$ git fetch origin 918ff50415fa65f4a109b9036a90c80c9e22a238:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-forms
 * [new ref]         918ff50415fa65f4a109b9036a90c80c9e22a238 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 918ff50 Version 1.2.10