$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-Curl.git /var/lib/mock/f45-build-27364-622/root/chroot_tmpdir/scmroot/perl-WWW-Curl
Cloning into '/var/lib/mock/f45-build-27364-622/root/chroot_tmpdir/scmroot/perl-WWW-Curl'...
$ git fetch origin 847bf8dc3e9dc0330f1bfa89c5f59450560c6b66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-Curl
 * [new ref]         847bf8dc3e9dc0330f1bfa89c5f59450560c6b66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 847bf8d Perl 5.44 rebuild