$ git clone -n https://src.fedoraproject.org/rpms/rust-supports-hyperlinks.git /var/lib/mock/f45-build-45324-822/root/chroot_tmpdir/scmroot/rust-supports-hyperlinks
Cloning into '/var/lib/mock/f45-build-45324-822/root/chroot_tmpdir/scmroot/rust-supports-hyperlinks'...
$ git fetch origin b9d7f186adad3155aff62bcf37db387d06fcc903:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-supports-hyperlinks
 * [new ref]         b9d7f186adad3155aff62bcf37db387d06fcc903 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9d7f18 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild