$ git clone -n https://src.fedoraproject.org/rpms/rust-cairo-rs.git /var/lib/mock/f40-build-2061323-49167/root/chroot_tmpdir/scmroot/rust-cairo-rs
Cloning into '/var/lib/mock/f40-build-2061323-49167/root/chroot_tmpdir/scmroot/rust-cairo-rs'...
$ git fetch origin 4d7494fef33a575565f95e690be0da48b7578dc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cairo-rs
 * [new ref]         4d7494fef33a575565f95e690be0da48b7578dc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d7494f Update to version 0.18.2; Fixes RHBZ#2239026