$ git clone -n https://src.fedoraproject.org/rpms/rust-gdk0.16.git /var/lib/mock/f38-build-side-43-rust-devel-1418382-31459/root/chroot_tmpdir/scmroot/rust-gdk0.16
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1418382-31459/root/chroot_tmpdir/scmroot/rust-gdk0.16'...
$ git fetch origin be07e1c55325aeba842833dc453cf3f1040b9e79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gdk0.16
 * [new ref]         be07e1c55325aeba842833dc453cf3f1040b9e79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be07e1c Initial import (gdk 0.16 compat package)