$ git clone -n https://src.fedoraproject.org/rpms/rubygem-actiontext.git /var/lib/mock/f39-build-1901338-42855/root/chroot_tmpdir/scmroot/rubygem-actiontext
Cloning into '/var/lib/mock/f39-build-1901338-42855/root/chroot_tmpdir/scmroot/rubygem-actiontext'...
$ git fetch origin 7b5f19a6164a3d74a809e49657df91bccd83cdbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-actiontext
 * [new ref]         7b5f19a6164a3d74a809e49657df91bccd83cdbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b5f19a Update to actiontext 7.0.8