$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-LexAlias.git /var/lib/mock/f45-build-23152-596/root/chroot_tmpdir/scmroot/perl-Devel-LexAlias
Cloning into '/var/lib/mock/f45-build-23152-596/root/chroot_tmpdir/scmroot/perl-Devel-LexAlias'...
$ git fetch origin 26f096974d4210ba54825ec2985122011a4d499b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-LexAlias
 * [new ref]         26f096974d4210ba54825ec2985122011a4d499b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26f0969 Perl 5.44 rebuild