$ git clone -n https://src.fedoraproject.org/rpms/perl-Encode-JP-Mobile.git /var/lib/mock/f45-build-23366-597/root/chroot_tmpdir/scmroot/perl-Encode-JP-Mobile
Cloning into '/var/lib/mock/f45-build-23366-597/root/chroot_tmpdir/scmroot/perl-Encode-JP-Mobile'...
$ git fetch origin d311f0b7716be747f17300dfc14ceb357b6a4084:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Encode-JP-Mobile
 * [new ref]         d311f0b7716be747f17300dfc14ceb357b6a4084 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d311f0b Perl 5.44 rebuild