$ git clone -n https://src.fedoraproject.org/rpms/rust-matchit0.7.git /var/lib/mock/f45-build-43138-800/root/chroot_tmpdir/scmroot/rust-matchit0.7
Cloning into '/var/lib/mock/f45-build-43138-800/root/chroot_tmpdir/scmroot/rust-matchit0.7'...
$ git fetch origin dbecc4d4dc4b7db94ae8ee7d6db36f2271aecf86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-matchit0.7
 * [new ref]         dbecc4d4dc4b7db94ae8ee7d6db36f2271aecf86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbecc4d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild