$ git clone -n https://src.fedoraproject.org/rpms/perl-ExtUtils-Install.git /var/lib/mock/f45-build-23398-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-Install
Cloning into '/var/lib/mock/f45-build-23398-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-Install'...
$ git fetch origin ec77bac167d1141c9e116dfb0dd6030d1250f19a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-ExtUtils-Install
 * [new ref]         ec77bac167d1141c9e116dfb0dd6030d1250f19a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec77bac Increase release to favour standalone package