$ git clone -n https://src.fedoraproject.org/rpms/gnucash.git /var/lib/mock/f42-build-861942-170521/root/chroot_tmpdir/scmroot/gnucash
Cloning into '/var/lib/mock/f42-build-861942-170521/root/chroot_tmpdir/scmroot/gnucash'...
$ git fetch origin f792604586c52b599377d94a10485ee5d78e9dda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnucash
 * [new ref]         f792604586c52b599377d94a10485ee5d78e9dda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f792604 Rebuild for ICU 76