$ git clone -n https://src.fedoraproject.org/rpms/perl-Parse-Gitignore.git /var/lib/mock/f41-build-side-1-3131728-39632/root/chroot_tmpdir/scmroot/perl-Parse-Gitignore
Cloning into '/var/lib/mock/f41-build-side-1-3131728-39632/root/chroot_tmpdir/scmroot/perl-Parse-Gitignore'...
$ git fetch origin 2c5715fa550f6b4bba780b5972ad2b53772b48e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Parse-Gitignore
 * [new ref]         2c5715fa550f6b4bba780b5972ad2b53772b48e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c5715f perl-Parse-Gitignore: 1.0 release