$ git clone -n https://src.fedoraproject.org/rpms/gtk4.git /var/lib/mock/f41-build-side-1-2873524-34393/root/chroot_tmpdir/scmroot/gtk4
Cloning into '/var/lib/mock/f41-build-side-1-2873524-34393/root/chroot_tmpdir/scmroot/gtk4'...
$ git fetch origin a7e5354a770bf7ca4db78f5ddef90215355aab2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk4
 * [new ref]         a7e5354a770bf7ca4db78f5ddef90215355aab2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7e5354 Update to 4.16.3