$ git clone -n https://src.fedoraproject.org/rpms/rust-libadwaita-sys.git /var/lib/mock/f38-build-side-43-rust-devel-1402262-31186/root/chroot_tmpdir/scmroot/rust-libadwaita-sys
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1402262-31186/root/chroot_tmpdir/scmroot/rust-libadwaita-sys'...
$ git fetch origin c21d673482a9c5f28446144df0c8da64828dd098:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libadwaita-sys
 * [new ref]         c21d673482a9c5f28446144df0c8da64828dd098 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c21d673 Update to version 0.5.2; Fixes RHBZ#2213966