$ git clone -n https://src.fedoraproject.org/rpms/gnucash.git /var/lib/mock/f40-build-788333-135103/root/chroot_tmpdir/scmroot/gnucash
Cloning into '/var/lib/mock/f40-build-788333-135103/root/chroot_tmpdir/scmroot/gnucash'...
$ git fetch origin 7754e1bf0067330ec388d4423689053388966945:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnucash
 * [new ref]         7754e1bf0067330ec388d4423689053388966945 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7754e1b Fix for SLR issue