$ git clone -n https://src.fedoraproject.org/rpms/rust-cairo-rs0.17.git /var/lib/mock/f39-build-1544139-36616/root/chroot_tmpdir/scmroot/rust-cairo-rs0.17
Cloning into '/var/lib/mock/f39-build-1544139-36616/root/chroot_tmpdir/scmroot/rust-cairo-rs0.17'...
$ git fetch origin d80581d2f12400f212e5e6bc91b4a4fd1de1443f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cairo-rs0.17
 * [new ref]         d80581d2f12400f212e5e6bc91b4a4fd1de1443f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d80581d Initial import (cairo-rs 0.17 compat package)