$ git clone -n https://src.fedoraproject.org/rpms/perl-MouseX-ConfigFromFile.git /var/lib/mock/f45-build-25209-610/root/chroot_tmpdir/scmroot/perl-MouseX-ConfigFromFile
Cloning into '/var/lib/mock/f45-build-25209-610/root/chroot_tmpdir/scmroot/perl-MouseX-ConfigFromFile'...
$ git fetch origin f89309b71d9fffac35d45cc7b512b527f45641ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MouseX-ConfigFromFile
 * [new ref]         f89309b71d9fffac35d45cc7b512b527f45641ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f89309b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild