$ git clone -n https://src.fedoraproject.org/rpms/rust-spm_precompiled.git /var/lib/mock/f45-build-45197-821/root/chroot_tmpdir/scmroot/rust-spm_precompiled
Cloning into '/var/lib/mock/f45-build-45197-821/root/chroot_tmpdir/scmroot/rust-spm_precompiled'...
$ git fetch origin 3383dc0740f06877d5b5e099ffbb935c1174c21d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spm_precompiled
 * [new ref]         3383dc0740f06877d5b5e099ffbb935c1174c21d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3383dc0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild