$ git clone -n https://src.fedoraproject.org/rpms/gtkd.git /var/lib/mock/f38-build-side-42-init-devel-1069571-29784/root/chroot_tmpdir/scmroot/gtkd
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1069571-29784/root/chroot_tmpdir/scmroot/gtkd'...
$ git fetch origin 12529042ccc1c6ef1d907930725fd54117079d0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkd
 * [new ref]         12529042ccc1c6ef1d907930725fd54117079d0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1252904 Rebuilt for ldc 1.32