$ git clone -n https://src.fedoraproject.org/rpms/rust-weezl.git /var/lib/mock/f45-build-46172-831/root/chroot_tmpdir/scmroot/rust-weezl
Cloning into '/var/lib/mock/f45-build-46172-831/root/chroot_tmpdir/scmroot/rust-weezl'...
$ git fetch origin 340c1fc4d5d71e81f8adb934c344b069d812ee29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-weezl
 * [new ref]         340c1fc4d5d71e81f8adb934c344b069d812ee29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 340c1fc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild