$ git clone -n https://src.fedoraproject.org/rpms/perl-String-License.git /var/lib/mock/f39-build-1696335-41175/root/chroot_tmpdir/scmroot/perl-String-License
Cloning into '/var/lib/mock/f39-build-1696335-41175/root/chroot_tmpdir/scmroot/perl-String-License'...
$ git fetch origin 10e00dce6b3336141f3deccf99cacde2b738b6be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-License
 * [new ref]         10e00dce6b3336141f3deccf99cacde2b738b6be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10e00dc Fix build against perl 5.38