$ git clone -n https://src.fedoraproject.org/rpms/gtksourceview5.git /var/lib/mock/f45-build-13195-447/root/chroot_tmpdir/scmroot/gtksourceview5
Cloning into '/var/lib/mock/f45-build-13195-447/root/chroot_tmpdir/scmroot/gtksourceview5'...
$ git fetch origin 03d7dd868f478032e0db62287ea10725d7121cf3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtksourceview5
 * [new ref]         03d7dd868f478032e0db62287ea10725d7121cf3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03d7dd8 Rebuild for libxml2 soname bump