$ git clone -n https://src.fedoraproject.org/rpms/gnucash.git /var/lib/mock/f40-build-1884287-25049/root/chroot_tmpdir/scmroot/gnucash
Cloning into '/var/lib/mock/f40-build-1884287-25049/root/chroot_tmpdir/scmroot/gnucash'...
$ git fetch origin 9b4ec0467751bf5349799e0435bcdd980d2b20ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnucash
 * [new ref]         9b4ec0467751bf5349799e0435bcdd980d2b20ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b4ec04 Merge branch 'rawhide' into f40