$ git clone -n https://src.fedoraproject.org/rpms/libzmf.git /var/lib/mock/f42-build-862637-170967/root/chroot_tmpdir/scmroot/libzmf
Cloning into '/var/lib/mock/f42-build-862637-170967/root/chroot_tmpdir/scmroot/libzmf'...
$ git fetch origin a4e95f6c32eb1fd45aa863d90bf30c1e9b6b7abd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libzmf
 * [new ref]         a4e95f6c32eb1fd45aa863d90bf30c1e9b6b7abd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4e95f6 Rebuild for ICU 76