$ git clone -n https://src.fedoraproject.org/rpms/screenie-composer.git /var/lib/mock/f41-build-1049373-19179/root/chroot_tmpdir/scmroot/screenie-composer
Cloning into '/var/lib/mock/f41-build-1049373-19179/root/chroot_tmpdir/scmroot/screenie-composer'...
$ git fetch origin b38ca95fd589a34b4946299baabcafbf88d922cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/screenie-composer
 * [new ref]         b38ca95fd589a34b4946299baabcafbf88d922cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b38ca95 Eliminate use of obsolete %patchN syntax (#2283636)