$ git clone -n https://src.fedoraproject.org/rpms/perl-Carp-Fix-1_25.git /var/lib/mock/f45-build-22226-590/root/chroot_tmpdir/scmroot/perl-Carp-Fix-1_25
Cloning into '/var/lib/mock/f45-build-22226-590/root/chroot_tmpdir/scmroot/perl-Carp-Fix-1_25'...
$ git fetch origin eab0bd869b7851b73687fdb852d272fda7ac1fa7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Carp-Fix-1_25
 * [new ref]         eab0bd869b7851b73687fdb852d272fda7ac1fa7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eab0bd8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild