$ git clone -n https://src.fedoraproject.org/rpms/rust-url1.git /var/lib/mock/f40-build-2271493-54888/root/chroot_tmpdir/scmroot/rust-url1
Cloning into '/var/lib/mock/f40-build-2271493-54888/root/chroot_tmpdir/scmroot/rust-url1'...
$ git fetch origin 00768dcb2d2880d4a433bb4677822b26502aa4dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-url1
 * [new ref]         00768dcb2d2880d4a433bb4677822b26502aa4dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00768dc Drop unused optional feature for supporting encoding