$ git clone -n https://src.fedoraproject.org/rpms/rust-effective-limits.git /var/lib/mock/f45-build-41390-782/root/chroot_tmpdir/scmroot/rust-effective-limits
Cloning into '/var/lib/mock/f45-build-41390-782/root/chroot_tmpdir/scmroot/rust-effective-limits'...
$ git fetch origin 795c88ad5d264098adae9fc96cdfe3d6b67634cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-effective-limits
 * [new ref]         795c88ad5d264098adae9fc96cdfe3d6b67634cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 795c88a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild