$ git clone -n https://src.fedoraproject.org/rpms/rust-librsvg.git /var/lib/mock/f40-build-2656156-66913/root/chroot_tmpdir/scmroot/rust-librsvg
Cloning into '/var/lib/mock/f40-build-2656156-66913/root/chroot_tmpdir/scmroot/rust-librsvg'...
$ git fetch origin dff561236f97f099fad67288454535567afc9a5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-librsvg
 * [new ref]         dff561236f97f099fad67288454535567afc9a5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dff5612 Update to 2.57.1