$ git clone -n https://src.fedoraproject.org/rpms/rust-joinery2.git /var/lib/mock/f45-build-42762-796/root/chroot_tmpdir/scmroot/rust-joinery2
Cloning into '/var/lib/mock/f45-build-42762-796/root/chroot_tmpdir/scmroot/rust-joinery2'...
$ git fetch origin 7369725f0b3eaf3fd9e4fed88b57c0b7582af95f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-joinery2
 * [new ref]         7369725f0b3eaf3fd9e4fed88b57c0b7582af95f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7369725 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild