$ git clone -n https://src.fedoraproject.org/rpms/rust-ruzstd.git /var/lib/mock/f45-build-44630-815/root/chroot_tmpdir/scmroot/rust-ruzstd
Cloning into '/var/lib/mock/f45-build-44630-815/root/chroot_tmpdir/scmroot/rust-ruzstd'...
$ git fetch origin cc1927dfc31c140fd5f209a59ed5893fde637b5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ruzstd
 * [new ref]         cc1927dfc31c140fd5f209a59ed5893fde637b5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc1927d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild