$ git clone -n https://src.fedoraproject.org/rpms/yagf.git /var/lib/mock/f41-build-side-1-2892744-34598/root/chroot_tmpdir/scmroot/yagf
Cloning into '/var/lib/mock/f41-build-side-1-2892744-34598/root/chroot_tmpdir/scmroot/yagf'...
$ git fetch origin 6542ae499191b22a8605d0ea9d0d46581efd8acd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yagf
 * [new ref]         6542ae499191b22a8605d0ea9d0d46581efd8acd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6542ae4 convert GPLv3+ license to SPDX